When the vendor invoice arrives, you then enter the invoice for the third-party order in Invoice Verification.
You enter the invoice in the same way as an invoice for a standard purchase order.
If you posted a statistical goods receipt for the purchase order, the invoice receipt results in an offsetting entry on the GR/IR clearing account, which is cleared.
If the customer is to be billed in Sales and Distribution based on the invoice quantity specified in the vendor invoice, this quantity is used as the basis for the billing document in Sales and Distribution. The billing document can only be posted once the vendor invoice has been posted.